You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
508 lines
16 KiB
508 lines
16 KiB
var util = require('../../../util');
|
|
|
|
import Label from './shared/Label'
|
|
import CubicBezierEdge from './edges/CubicBezierEdge'
|
|
import BezierEdgeDynamic from './edges/BezierEdgeDynamic'
|
|
import BezierEdgeStatic from './edges/BezierEdgeStatic'
|
|
import StraightEdge from './edges/StraightEdge'
|
|
|
|
/**
|
|
* @class Edge
|
|
*
|
|
* A edge connects two nodes
|
|
* @param {Object} properties Object with options. Must contain
|
|
* At least options from and to.
|
|
* Available options: from (number),
|
|
* to (number), label (string, color (string),
|
|
* width (number), style (string),
|
|
* length (number), title (string)
|
|
* @param {Network} network A Network object, used to find and edge to
|
|
* nodes.
|
|
* @param {Object} constants An object with default values for
|
|
* example for the color
|
|
*/
|
|
class Edge {
|
|
constructor(options, body, globalOptions) {
|
|
if (body === undefined) {
|
|
throw "No body provided";
|
|
}
|
|
this.options = util.bridgeObject(globalOptions);
|
|
this.globalOptions = globalOptions;
|
|
this.body = body;
|
|
|
|
// initialize variables
|
|
this.id = undefined;
|
|
this.fromId = undefined;
|
|
this.toId = undefined;
|
|
this.selected = false;
|
|
this.hover = false;
|
|
this.labelDirty = true;
|
|
this.colorDirty = true;
|
|
|
|
this.baseWidth = this.options.width;
|
|
this.baseFontSize = this.options.font.size;
|
|
|
|
this.from = undefined; // a node
|
|
this.to = undefined; // a node
|
|
|
|
this.edgeType = undefined;
|
|
|
|
this.connected = false;
|
|
|
|
this.labelModule = new Label(this.body, this.options);
|
|
|
|
this.setOptions(options);
|
|
}
|
|
|
|
|
|
/**
|
|
* Set or overwrite options for the edge
|
|
* @param {Object} options an object with options
|
|
* @param doNotEmit
|
|
*/
|
|
setOptions(options) {
|
|
if (!options) {
|
|
return;
|
|
}
|
|
this.colorDirty = true;
|
|
|
|
Edge.parseOptions(this.options, options, true, this.globalOptions);
|
|
|
|
if (options.id !== undefined) {this.id = options.id;}
|
|
if (options.from !== undefined) {this.fromId = options.from;}
|
|
if (options.to !== undefined) {this.toId = options.to;}
|
|
if (options.title !== undefined) {this.title = options.title;}
|
|
if (options.value !== undefined) {options.value = parseFloat(options.value);}
|
|
|
|
|
|
// update label Module
|
|
this.updateLabelModule();
|
|
|
|
let dataChanged = this.updateEdgeType();
|
|
|
|
// if anything has been updates, reset the selection width and the hover width
|
|
this._setInteractionWidths();
|
|
|
|
// A node is connected when it has a from and to node that both exist in the network.body.nodes.
|
|
this.connect();
|
|
|
|
if (options.hidden !== undefined || options.physics !== undefined) {
|
|
dataChanged = true;
|
|
}
|
|
|
|
return dataChanged;
|
|
}
|
|
|
|
static parseOptions(parentOptions, newOptions, allowDeletion = false, globalOptions = {}) {
|
|
var fields = [
|
|
'id',
|
|
'from',
|
|
'hidden',
|
|
'hoverWidth',
|
|
'label',
|
|
'labelHighlightBold',
|
|
'length',
|
|
'line',
|
|
'opacity',
|
|
'physics',
|
|
'scaling',
|
|
'selectionWidth',
|
|
'selfReferenceSize',
|
|
'to',
|
|
'title',
|
|
'value',
|
|
'width'
|
|
];
|
|
|
|
// only deep extend the items in the field array. These do not have shorthand.
|
|
util.selectiveDeepExtend(fields, parentOptions, newOptions, allowDeletion);
|
|
|
|
util.mergeOptions(parentOptions, newOptions, 'smooth', allowDeletion, globalOptions);
|
|
util.mergeOptions(parentOptions, newOptions, 'shadow', allowDeletion, globalOptions);
|
|
|
|
if (newOptions.dashes !== undefined && newOptions.dashes !== null) {
|
|
parentOptions.dashes = newOptions.dashes;
|
|
}
|
|
else if (allowDeletion === true && newOptions.dashes === null) {
|
|
parentOptions.dashes = Object.create(globalOptions.dashes); // this sets the pointer of the option back to the global option.
|
|
}
|
|
|
|
// set the scaling newOptions
|
|
if (newOptions.scaling !== undefined && newOptions.scaling !== null) {
|
|
if (newOptions.scaling.min !== undefined) {parentOptions.scaling.min = newOptions.scaling.min;}
|
|
if (newOptions.scaling.max !== undefined) {parentOptions.scaling.max = newOptions.scaling.max;}
|
|
util.mergeOptions(parentOptions.scaling, newOptions.scaling, 'label', allowDeletion, globalOptions.scaling);
|
|
}
|
|
else if (allowDeletion === true && newOptions.scaling === null) {
|
|
parentOptions.scaling = Object.create(globalOptions.scaling); // this sets the pointer of the option back to the global option.
|
|
}
|
|
|
|
// hanlde multiple input cases for arrows
|
|
if (newOptions.arrows !== undefined && newOptions.arrows !== null) {
|
|
if (typeof newOptions.arrows === 'string') {
|
|
let arrows = newOptions.arrows.toLowerCase();
|
|
if (arrows.indexOf("to") != -1) {parentOptions.arrows.to.enabled = true;}
|
|
if (arrows.indexOf("middle") != -1) {parentOptions.arrows.middle.enabled = true;}
|
|
if (arrows.indexOf("from") != -1) {parentOptions.arrows.from.enabled = true;}
|
|
}
|
|
else if (typeof newOptions.arrows === 'object') {
|
|
util.mergeOptions(parentOptions.arrows, newOptions.arrows, 'to', allowDeletion, globalOptions.arrows);
|
|
util.mergeOptions(parentOptions.arrows, newOptions.arrows, 'middle', allowDeletion, globalOptions.arrows);
|
|
util.mergeOptions(parentOptions.arrows, newOptions.arrows, 'from', allowDeletion, globalOptions.arrows);
|
|
}
|
|
else {
|
|
throw new Error("The arrow newOptions can only be an object or a string. Refer to the documentation. You used:" + JSON.stringify(newOptions.arrows));
|
|
}
|
|
}
|
|
else if (allowDeletion === true && newOptions.arrows === null) {
|
|
parentOptions.arrows = Object.create(globalOptions.arrows); // this sets the pointer of the option back to the global option.
|
|
}
|
|
|
|
// hanlde multiple input cases for color
|
|
if (newOptions.color !== undefined && newOptions.color !== null) {
|
|
if (util.isString(newOptions.color)) {
|
|
parentOptions.color.color = newOptions.color;
|
|
parentOptions.color.highlight = newOptions.color;
|
|
parentOptions.color.hover = newOptions.color;
|
|
parentOptions.color.inherit = false;
|
|
}
|
|
else {
|
|
let colorsDefined = false;
|
|
if (newOptions.color.color !== undefined) {parentOptions.color.color = newOptions.color.color; colorsDefined = true;}
|
|
if (newOptions.color.highlight !== undefined) {parentOptions.color.highlight = newOptions.color.highlight; colorsDefined = true;}
|
|
if (newOptions.color.hover !== undefined) {parentOptions.color.hover = newOptions.color.hover; colorsDefined = true;}
|
|
if (newOptions.color.inherit !== undefined) {parentOptions.color.inherit = newOptions.color.inherit;}
|
|
if (newOptions.color.opacity !== undefined) {parentOptions.color.opacity = Math.min(1,Math.max(0,newOptions.color.opacity));}
|
|
|
|
if (newOptions.color.inherit === undefined && colorsDefined === true) {
|
|
parentOptions.color.inherit = false;
|
|
}
|
|
}
|
|
}
|
|
else if (allowDeletion === true && newOptions.color === null) {
|
|
parentOptions.color = Object.create(globalOptions.color); // this sets the pointer of the option back to the global option.
|
|
}
|
|
|
|
// handle the font settings
|
|
if (newOptions.font !== undefined && newOptions.font !== null) {
|
|
Label.parseOptions(parentOptions.font, newOptions);
|
|
}
|
|
else if (allowDeletion === true && newOptions.font === null) {
|
|
parentOptions.font = Object.create(globalOptions.font); // this sets the pointer of the option back to the global option.
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* update the options in the label module
|
|
*/
|
|
updateLabelModule() {
|
|
this.labelModule.setOptions(this.options, true);
|
|
if (this.labelModule.baseSize !== undefined) {
|
|
this.baseFontSize = this.labelModule.baseSize;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* update the edge type, set the options
|
|
* @returns {boolean}
|
|
*/
|
|
updateEdgeType() {
|
|
let dataChanged = false;
|
|
let changeInType = true;
|
|
let smooth = this.options.smooth;
|
|
if (this.edgeType !== undefined) {
|
|
if (this.edgeType instanceof BezierEdgeDynamic && smooth.enabled === true && smooth.type === 'dynamic') {changeInType = false;}
|
|
if (this.edgeType instanceof CubicBezierEdge && smooth.enabled === true && smooth.type === 'cubicBezier') {changeInType = false;}
|
|
if (this.edgeType instanceof BezierEdgeStatic && smooth.enabled === true && smooth.type !== 'dynamic' && smooth.type !== 'cubicBezier') {changeInType = false;}
|
|
if (this.edgeType instanceof StraightEdge && smooth.enabled === false) {changeInType = false;}
|
|
|
|
if (changeInType === true) {
|
|
dataChanged = this.cleanup();
|
|
}
|
|
}
|
|
|
|
if (changeInType === true) {
|
|
if (this.options.smooth.enabled === true) {
|
|
if (this.options.smooth.type === 'dynamic') {
|
|
dataChanged = true;
|
|
this.edgeType = new BezierEdgeDynamic(this.options, this.body, this.labelModule);
|
|
}
|
|
else if (this.options.smooth.type === 'cubicBezier') {
|
|
this.edgeType = new CubicBezierEdge(this.options, this.body, this.labelModule);
|
|
}
|
|
else {
|
|
this.edgeType = new BezierEdgeStatic(this.options, this.body, this.labelModule);
|
|
}
|
|
}
|
|
else {
|
|
this.edgeType = new StraightEdge(this.options, this.body, this.labelModule);
|
|
}
|
|
}
|
|
else {
|
|
// if nothing changes, we just set the options.
|
|
this.edgeType.setOptions(this.options);
|
|
}
|
|
|
|
return dataChanged;
|
|
}
|
|
|
|
|
|
/**
|
|
* Connect an edge to its nodes
|
|
*/
|
|
connect() {
|
|
this.disconnect();
|
|
|
|
this.from = this.body.nodes[this.fromId] || undefined;
|
|
this.to = this.body.nodes[this.toId] || undefined;
|
|
this.connected = (this.from !== undefined && this.to !== undefined);
|
|
|
|
if (this.connected === true) {
|
|
this.from.attachEdge(this);
|
|
this.to.attachEdge(this);
|
|
}
|
|
else {
|
|
if (this.from) {
|
|
this.from.detachEdge(this);
|
|
}
|
|
if (this.to) {
|
|
this.to.detachEdge(this);
|
|
}
|
|
}
|
|
|
|
this.edgeType.connect();
|
|
}
|
|
|
|
|
|
/**
|
|
* Disconnect an edge from its nodes
|
|
*/
|
|
disconnect() {
|
|
if (this.from) {
|
|
this.from.detachEdge(this);
|
|
this.from = undefined;
|
|
}
|
|
if (this.to) {
|
|
this.to.detachEdge(this);
|
|
this.to = undefined;
|
|
}
|
|
|
|
this.connected = false;
|
|
}
|
|
|
|
|
|
/**
|
|
* get the title of this edge.
|
|
* @return {string} title The title of the edge, or undefined when no title
|
|
* has been set.
|
|
*/
|
|
getTitle() {
|
|
return this.title;
|
|
}
|
|
|
|
|
|
/**
|
|
* check if this node is selecte
|
|
* @return {boolean} selected True if node is selected, else false
|
|
*/
|
|
isSelected() {
|
|
return this.selected;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Retrieve the value of the edge. Can be undefined
|
|
* @return {Number} value
|
|
*/
|
|
getValue() {
|
|
return this.options.value;
|
|
}
|
|
|
|
|
|
/**
|
|
* Adjust the value range of the edge. The edge will adjust it's width
|
|
* based on its value.
|
|
* @param {Number} min
|
|
* @param {Number} max
|
|
* @param total
|
|
*/
|
|
setValueRange(min, max, total) {
|
|
if (this.options.value !== undefined) {
|
|
var scale = this.options.scaling.customScalingFunction(min, max, total, this.options.value);
|
|
var widthDiff = this.options.scaling.max - this.options.scaling.min;
|
|
if (this.options.scaling.label.enabled === true) {
|
|
var fontDiff = this.options.scaling.label.max - this.options.scaling.label.min;
|
|
this.options.font.size = this.options.scaling.label.min + scale * fontDiff;
|
|
}
|
|
this.options.width = this.options.scaling.min + scale * widthDiff;
|
|
}
|
|
else {
|
|
this.options.width = this.baseWidth;
|
|
this.options.font.size = this.baseFontSize;
|
|
}
|
|
|
|
this._setInteractionWidths();
|
|
this.updateLabelModule();
|
|
}
|
|
|
|
_setInteractionWidths() {
|
|
if (typeof this.options.hoverWidth === 'function') {
|
|
this.edgeType.hoverWidth = this.options.hoverWidth(this.options.width);
|
|
}
|
|
else {
|
|
this.edgeType.hoverWidth = this.options.hoverWidth + this.options.width;
|
|
}
|
|
|
|
if (typeof this.options.selectionWidth === 'function') {
|
|
this.edgeType.selectionWidth = this.options.selectionWidth(this.options.width);
|
|
}
|
|
else {
|
|
this.edgeType.selectionWidth = this.options.selectionWidth + this.options.width;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Redraw a edge
|
|
* Draw this edge in the given canvas
|
|
* The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d");
|
|
* @param {CanvasRenderingContext2D} ctx
|
|
*/
|
|
draw(ctx) {
|
|
let via = this.edgeType.drawLine(ctx, this.selected, this.hover);
|
|
this.drawArrows(ctx, via);
|
|
this.drawLabel (ctx, via);
|
|
}
|
|
|
|
drawArrows(ctx, viaNode) {
|
|
if (this.options.arrows.from.enabled === true) {this.edgeType.drawArrowHead(ctx,'from', viaNode, this.selected, this.hover);}
|
|
if (this.options.arrows.middle.enabled === true) {this.edgeType.drawArrowHead(ctx,'middle', viaNode, this.selected, this.hover);}
|
|
if (this.options.arrows.to.enabled === true) {this.edgeType.drawArrowHead(ctx,'to', viaNode, this.selected, this.hover);}
|
|
}
|
|
|
|
drawLabel(ctx, viaNode) {
|
|
if (this.options.label !== undefined) {
|
|
// set style
|
|
var node1 = this.from;
|
|
var node2 = this.to;
|
|
var selected = (this.from.selected || this.to.selected || this.selected);
|
|
if (node1.id != node2.id) {
|
|
this.labelModule.pointToSelf = false;
|
|
var point = this.edgeType.getPoint(0.5, viaNode);
|
|
ctx.save();
|
|
|
|
// if the label has to be rotated:
|
|
if (this.options.font.align !== "horizontal") {
|
|
this.labelModule.calculateLabelSize(ctx,selected,point.x,point.y);
|
|
ctx.translate(point.x, this.labelModule.size.yLine);
|
|
this._rotateForLabelAlignment(ctx);
|
|
}
|
|
|
|
// draw the label
|
|
this.labelModule.draw(ctx, point.x, point.y, selected);
|
|
ctx.restore();
|
|
}
|
|
else {
|
|
// Ignore the orientations.
|
|
this.labelModule.pointToSelf = true;
|
|
var x, y;
|
|
var radius = this.options.selfReferenceSize;
|
|
if (node1.shape.width > node1.shape.height) {
|
|
x = node1.x + node1.shape.width * 0.5;
|
|
y = node1.y - radius;
|
|
}
|
|
else {
|
|
x = node1.x + radius;
|
|
y = node1.y - node1.shape.height * 0.5;
|
|
}
|
|
point = this._pointOnCircle(x, y, radius, 0.125);
|
|
this.labelModule.draw(ctx, point.x, point.y, selected);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Check if this object is overlapping with the provided object
|
|
* @param {Object} obj an object with parameters left, top
|
|
* @return {boolean} True if location is located on the edge
|
|
*/
|
|
isOverlappingWith(obj) {
|
|
if (this.connected) {
|
|
var distMax = 10;
|
|
var xFrom = this.from.x;
|
|
var yFrom = this.from.y;
|
|
var xTo = this.to.x;
|
|
var yTo = this.to.y;
|
|
var xObj = obj.left;
|
|
var yObj = obj.top;
|
|
|
|
var dist = this.edgeType.getDistanceToEdge(xFrom, yFrom, xTo, yTo, xObj, yObj);
|
|
|
|
return (dist < distMax);
|
|
}
|
|
else {
|
|
return false
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Rotates the canvas so the text is most readable
|
|
* @param {CanvasRenderingContext2D} ctx
|
|
* @private
|
|
*/
|
|
_rotateForLabelAlignment(ctx) {
|
|
var dy = this.from.y - this.to.y;
|
|
var dx = this.from.x - this.to.x;
|
|
var angleInDegrees = Math.atan2(dy, dx);
|
|
|
|
// rotate so label it is readable
|
|
if ((angleInDegrees < -1 && dx < 0) || (angleInDegrees > 0 && dx < 0)) {
|
|
angleInDegrees = angleInDegrees + Math.PI;
|
|
}
|
|
|
|
ctx.rotate(angleInDegrees);
|
|
}
|
|
|
|
|
|
/**
|
|
* Get a point on a circle
|
|
* @param {Number} x
|
|
* @param {Number} y
|
|
* @param {Number} radius
|
|
* @param {Number} percentage. Value between 0 (line start) and 1 (line end)
|
|
* @return {Object} point
|
|
* @private
|
|
*/
|
|
_pointOnCircle(x, y, radius, percentage) {
|
|
var angle = percentage * 2 * Math.PI;
|
|
return {
|
|
x: x + radius * Math.cos(angle),
|
|
y: y - radius * Math.sin(angle)
|
|
}
|
|
}
|
|
|
|
|
|
select() {
|
|
this.selected = true;
|
|
}
|
|
|
|
|
|
unselect() {
|
|
this.selected = false;
|
|
}
|
|
|
|
|
|
/**
|
|
* cleans all required things on delete
|
|
* @returns {*}
|
|
*/
|
|
cleanup() {
|
|
return this.edgeType.cleanup();
|
|
}
|
|
}
|
|
|
|
export default Edge;
|